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No. 608,950. I Patented Aug. 9, I898. H. .1; snooKEs a; A. 2 DAVIS.

' MANUFACTURE OF WHEEL HUB-S AND MACHINERY THEREFOR.

(Application med Dec. 24, 1897.) (No Model.) 5 Sheets-Sheet l.

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Patented Aug.'9, I898. V H. J. BRDUKES &. A. B. DAVIS. A

MANUFACTURE OF WHEEL HUBS AND MACHINERY THEREFOR.

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INVENTORS WITNESSES No. 608,950. 7 I Patented Aug. 9, I898. H. J. BROOKES & A. B. DAVIS.

MANUFACTURE OF WHEEL HUBSAND MACHINERY THEREFOR.

(Application filed Dec. 24, 1897.) (No Model.) 5 Sheets-$hset 3.

WITNESSES INVENTORB W Tm: Norms Pzrzns co. PHoTouTnmwAsnmsTm. D. c.

No. 608,950. Patented Aug. 9, I898.

H. J. BROUKES &. A. B. DAVIS. l MANUFACTURE OF WHEEL HUBS AND MAGHINERYTHEREFOR.

(Application filed Deni 24, 1897.) (No Model.) 5 Sheets-Sheet 4,.

WITNESSES "m: Non -s PEYERS co, PNOTD-LITNOH WASNINGTON. on:

No. 608,950. Patented Aug. 9, I898.

H. J. BRO0KES & A. B. DAVIS. MANUFACTURE OF WHEEL HUBS AND MACHINERY THEREFOR.

(Application filed Dec. 24. 1897.

(No Model.) 5 Sheets-Shae} 5.

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INVENTOR s W "m: NORRIS Perms co. PHOTO-LITNQ, WASNINOTON 0.:

HENRY JAMES BROOKES, or oAPn III'LL, A D ALFRED-BENJAMIN DAVIS, or

' WINSON GREEN, ENGLAND.

MANUFACTURE OF WHEEL-HUBS AND MACHINE-RY THEREFOR.

SPECIFICATION forming part-of Letters Patent No. 608,950, dated August 9, 1898..

Application filed December 24,1897. Serial No. 668,345. (No model.) Patented in Englandllugust 1,1896, No. 17,070, March 7 16,1897,No.6,808,a11d July 31,1897, No.17,950.

To all whom, it may concern.-

Be it known that we, HENRY JAMES BROOKES, residing at Cape Hill, near the city of Birmingham, and ALFRED BENJAMIN DAVIS, engineer, residing at 6 Bacchus road, WVinson Green, near Birmingham, England, subjects of the Queen of GreatBrit-ain, have invented certain new and useful Improvements in the Manufacture of Wheel-Hubs and in Machinery Therefor, of which the following is a specification, and for which invention we have obtained three several Letters Patent of Great Britain, dated, respectively, March 16, 1897, No. 6,808, July 31, 1897, No. 17,950, and August 1, 1896, No. 17,070.

This invention relates to the manufacture of hubs from tubular blanks and to the preparation of such blanks.

Figure 1 of the accompanying drawings rep- 2o resents, partly in elevation and partly in vertical section, a machine for forming the spokefianges of wheel-hubs by simultaneously col-- ,lapsing or closing together the walls of annular swells, bulgings, or beadings of a tubu- 2 5 lar blank, said bulgings having been formed of previously thinned or reduced parts of the said blank by a previous operation or process. This view shows the parts of the machine in the positions they assume previous to a beaded blank being placed therein. Fig. 2 is a section, upon an enlargedscale, of the operat:

ing parts of the machine, but showing the blank in position and the bulgings collapsed to form the flanges. Fig. 3 is a sectional view of the'acting parts of the machine upon the same scale as Fig. 2, showing the blank in position within the holding-die and with the plungers retired or before making their forward strokes for collapsing the bulgings. Fig. 4 is a front elevation of one of the plun ers separately, and Fig. 5 represents the disassembled component parts of the same in section and in. elevation. in side elevation and end elevation the sections of the holding-die between which the blank is held while being operated upon, and Fig. 7 represents the said halves of the'holding-die in end elevation and vertical section and separated from one another. Fig.8 is a separate elevation and a vertical section of Fig. 6 represents the blank-holding dies and their frame or support upon the same scale as Fig. 1. Fig.

- 9 is an elevation and a section of the framing of the blank-holder with the dies removed.

Fig. 10 represents in front and side elevation one of thetraversing slippers carrying the acting plunger, showing the dovetail bottom gap or saddle which takes over the correspondingly-formed bed of the machine and guides the said plunger in its reciprocating traverse. Fig. 11 represents the tubular blank from which a hub is made and previously to the circumferential thinning of the walls at parts where the bulgings are to come. Fig. 12 represents the blank thinned prior to bulging. Fig. 13 represents the open-ended and thinned blank in position upon a bulbed mandrel ready for the formation of the bulgings thereon by the double-grooved roller. Fig, 14 represents the said blank after the annular bulgings have been formed thereon.

placed upon the double-bulbed mandrel h,

Fig. 13, and the mandrel, which may either be rotated or remain stationary, is then brought up to or is approached by an outside rotating roller 2', having annular grooves 2" corresponding to the bulbs 72. on the mandrel and the .thin parts f of the blank, and by the said partsbeing forced closer and closer together the thinned portions nipped between the mandrel-bulbs and roller-grooves are outwardly expanded into enlargements or bulbs f, as representedin Fig. 14;.

. The machine for flattening the bulgings into spoke-flanges consists of a horizontal frame a, supporting a bed-plate a, carrying at its opposite ends upright brackets or bearings' a wherein rotating crankaxles h, geared so as to turn together, but in. opposite directions and at the same speed by intermeshing spurwheels I) b on their ends, one of which is in connection with the driving-shaft or gearing, are mounted.

The cranks b are connected, preferably by means of rods Z2 having spherical or ball ends 17 working within adjustable sockets Z), to and communicate to a pair of slippers or reciprocating carriers 0, which move to and from upon the bed and are guided thereon at bottom by the dovetail edges 0 of the saddles and also at top by the bar a of the frame, taking into the gaps 0 while the middle part of the said bar has formed within it a screwbox wherethrough a rising and falling screw 61, operated by a hand-wheel dat its upper end and carrying and being swivelly connected at its lower end 01 to the upper part or movable section 6' of a horizontallysplit blank-holding die, passes. This upper part of the split die is directed in its risingand-falling movement by sliding on ribs or guides e on the sides of the frame or holder e mounted across the middle of bed-plate, while the lower section or part c is stationary and is carried by and made a fixture to the said frame or holder. The split die has recesses e in its ends, the faces of which form the acting parts and which recesses are filled up by the spoke-flanges when formed, while the said die is of a length equal to the distance between the bulgings or annular swellings f of the hub-blank f, and its bore is of an internal diameter equal to the outside diameter of the waist part f of the said blank, which is placed between the dies and there clamped and held rigidly while being operated on by closing down the said dies through the screw and hand-wheel, while iitted or secured to the opposed faces a of the slippers and in axial line with the bore of the split die are recessed plungers 6, each consisting of a cylindrical sleeve g, made fast to the slipper, and with a flanged end g coming at the back, and an open mouth 9 presented to the front or that part facing the split die. The open mouth may be formed of a greater internal diameter than the bulge, so as to take and slide or be guided over corresponding and extending end portions 6 of the split die-sections, while the thrust or end pressure for upsetting the bulgings is effected by an inside annular shoulder or bush-die 9 secured by pins 9 or otherwise to the body of the plunger and surrounding the mandrel by which blank under operation is internally supported. Thus on the cranks being made to rotate in opposite directions the slippers are made to approach each other or toward the ends of the split die, when the bulged and unsupported parts near both ends of the blank are collapsed or crushed up between the opposed annular faces or acting ends e g of the die-sections and plungers on the said slippers coming full home, the blank being then fully supported internally by the mandrels 9 whose ends g come together at the middle of the bore of the said blank, while the shoulders g thereon come against the extreme outer ends f of the blank, with the portions outward of the flanges f coming in the spaces g between the mandrels and the encircling bush-dies 9 This done, the slippers retire or make a back movement, leaving the blank with the said spoke-flanges f 4 formed thereon within the die, the upper part of which is lifted, and the barrel or other hub thus made is removed.

It is understood that it is not necessary for the sleeves or plungers to take over the ends of necks upon or extending parts of the die, as the crushing up of the unsupported bulgings of the blank may be effected simply between the opposed acting ends of the sleeve or bush-dies and the split holdingdie.

Although we have described in the former arrangement the simultaneous collapsing of two bulges, yet it is understood that only one bulging may be upset at the same time.

Having fully described our invention, what we desire to claim and secure by Letters Patent is 1. In machinery for producing the flanges of wheel-hubs by simultaneously collapsing previously-formed annular bulgings of a tubular blank, the combination with a sectional blank-holding die, of two advancing and retiring plungers having concentric mandrels to enter and support the tubular blank, and annular shoulders for acting with the ends of the blank-holding die to collapse the bulgings of the blank, substantially as described.

2. In machinery for producing the flanges of wheel-hubs by simultaneously operating upon and collapsing previously-formed annular bulgings of a tubular blank, the combination with a split or sectional blank-holding die, and advancing and retiring plungers, having acting shoulders or equivalents surrounding mandrels or internal supports for the blank, of slippers or reciprocating carriers, carrying the said plungers and traversing and being guided on a suitable bed, and with motion communicated to the same from shafts driven in opposite directions by gear, substantially as described and set forth;

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

HENRY JAMES BROOKES. ALFRED BENJAMIN DAVIS. Witnesses:

HENRY SKERRETT, ARTHUR STADLER. 

